java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:27:54,874 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:27:54,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:27:54,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:27:54,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:27:54,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:27:54,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:27:54,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:27:54,893 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:27:54,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:27:54,894 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:27:54,895 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:27:54,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:27:54,897 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:27:54,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:27:54,898 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:27:54,900 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:27:54,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:27:54,903 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:27:54,904 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:27:54,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:27:54,908 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:27:54,908 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:27:54,908 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:27:54,909 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:27:54,910 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:27:54,911 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:27:54,912 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:27:54,913 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-22 04:27:54,917 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:27:54,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:27:54,931 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:27:54,931 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:27:54,931 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:27:54,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:27:54,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:27:54,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:27:54,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:27:54,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:27:54,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:27:54,934 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:27:54,934 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:27:54,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:27:54,934 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:27:54,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:27:54,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:27:54,935 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:27:54,936 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:27:54,936 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:27:54,969 INFO ]: Repository-Root is: /tmp [2018-06-22 04:27:54,981 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:27:54,984 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:27:54,985 INFO ]: Initializing SmtParser... [2018-06-22 04:27:54,985 INFO ]: SmtParser initialized [2018-06-22 04:27:54,986 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 [2018-06-22 04:27:54,987 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 04:27:55,074 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 unknown [2018-06-22 04:27:55,609 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 [2018-06-22 04:27:55,613 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:27:55,619 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:27:55,620 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:27:55,620 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:27:55,620 INFO ]: ChcToBoogie initialized [2018-06-22 04:27:55,623 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,679 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55 Unit [2018-06-22 04:27:55,679 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:27:55,680 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:27:55,680 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:27:55,680 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:27:55,725 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,725 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,742 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,742 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,759 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,761 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,764 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... [2018-06-22 04:27:55,775 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:27:55,776 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:27:55,776 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:27:55,776 INFO ]: RCFGBuilder initialized [2018-06-22 04:27:55,777 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:27:55,788 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:27:55,788 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:27:55,788 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:27:55,788 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:27:55,788 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:27:55,788 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:27:56,111 INFO ]: Using library mode [2018-06-22 04:27:56,111 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:27:56 BoogieIcfgContainer [2018-06-22 04:27:56,112 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:27:56,113 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:27:56,113 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:27:56,121 INFO ]: TraceAbstraction initialized [2018-06-22 04:27:56,122 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:27:55" (1/3) ... [2018-06-22 04:27:56,122 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bd19c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:27:56, skipping insertion in model container [2018-06-22 04:27:56,123 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:27:55" (2/3) ... [2018-06-22 04:27:56,124 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bd19c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:27:56, skipping insertion in model container [2018-06-22 04:27:56,124 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:27:56" (3/3) ... [2018-06-22 04:27:56,125 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:27:56,134 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:27:56,142 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:27:56,178 INFO ]: Using default assertion order modulation [2018-06-22 04:27:56,179 INFO ]: Interprodecural is true [2018-06-22 04:27:56,179 INFO ]: Hoare is false [2018-06-22 04:27:56,179 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:27:56,179 INFO ]: Backedges is TWOTRACK [2018-06-22 04:27:56,179 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:27:56,179 INFO ]: Difference is false [2018-06-22 04:27:56,179 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:27:56,179 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:27:56,192 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:27:56,207 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:27:56,207 INFO ]: Found error trace [2018-06-22 04:27:56,208 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:27:56,208 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:27:56,213 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:27:56,214 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:27:56,214 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:27:56,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:56,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:27:56,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:56,310 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:27:56,396 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:27:56,397 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:27:56,397 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:27:56,399 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:27:56,408 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:27:56,409 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:27:56,411 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:27:56,482 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:27:56,482 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:27:56,483 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:27:56,484 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:27:56,484 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:27:56,491 INFO ]: With dead ends: 9 [2018-06-22 04:27:56,491 INFO ]: Without dead ends: 9 [2018-06-22 04:27:56,492 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:27:56,506 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:27:56,534 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:27:56,535 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:27:56,535 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:27:56,536 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:27:56,536 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:27:56,536 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:27:56,536 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:27:56,537 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:27:56,537 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:27:56,537 INFO ]: Found error trace [2018-06-22 04:27:56,537 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:27:56,538 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:27:56,538 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:27:56,538 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:27:56,538 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:27:56,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:56,539 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:27:56,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:56,670 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:27:56,910 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:27:56,910 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:27:56,910 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 04:27:56,924 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:27:57,051 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:27:57,062 INFO ]: Computing forward predicates... [2018-06-22 04:27:57,380 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:27:57,413 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:27:57,414 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:27:57,414 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:27:57,414 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:27:57,414 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:27:57,414 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:27:57,646 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 04:27:57,718 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:27:57,718 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:27:57,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:27:57,718 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:27:57,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:27:57,718 INFO ]: With dead ends: 11 [2018-06-22 04:27:57,718 INFO ]: Without dead ends: 11 [2018-06-22 04:27:57,719 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:27:57,719 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:27:57,720 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:27:57,720 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:27:57,721 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:27:57,721 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:27:57,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:27:57,721 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:27:57,721 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:27:57,721 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:27:57,721 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:27:57,721 INFO ]: Found error trace [2018-06-22 04:27:57,721 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:27:57,722 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:27:57,722 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:27:57,722 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:27:57,722 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:27:57,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:57,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:27:57,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:27:57,829 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:27:58,302 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:27:58,302 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:27:58,302 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:27:58,309 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:27:58,443 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:27:58,443 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:27:58,452 INFO ]: Computing forward predicates... [2018-06-22 04:27:59,257 WARN ]: Spent 405.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-06-22 04:27:59,769 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-06-22 04:28:01,392 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2018-06-22 04:28:01,395 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:01,427 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:01,427 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:28:01,428 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:28:01,428 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:28:01,428 INFO ]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:28:01,428 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:28:01,613 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:01,613 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:28:01,613 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:28:01,613 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:28:01,613 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:01,614 INFO ]: With dead ends: 13 [2018-06-22 04:28:01,614 INFO ]: Without dead ends: 13 [2018-06-22 04:28:01,614 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:28:01,614 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:28:01,615 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:28:01,616 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:28:01,616 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:28:01,616 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:28:01,616 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:01,616 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:28:01,616 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:28:01,616 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:28:01,617 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:28:01,617 INFO ]: Found error trace [2018-06-22 04:28:01,617 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:01,617 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:01,617 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:28:01,617 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:01,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:01,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:01,618 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:28:01,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:01,719 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:02,009 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:02,009 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:02,009 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:02,018 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:28:02,191 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:28:02,191 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:02,208 INFO ]: Computing forward predicates... [2018-06-22 04:28:05,838 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2018-06-22 04:28:05,857 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:05,882 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:05,882 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 04:28:05,882 INFO ]: Interpolant automaton has 13 states [2018-06-22 04:28:05,882 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 04:28:05,883 INFO ]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:28:05,883 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 04:28:06,343 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:06,343 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 04:28:06,343 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 04:28:06,343 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 04:28:06,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:06,344 INFO ]: With dead ends: 15 [2018-06-22 04:28:06,344 INFO ]: Without dead ends: 15 [2018-06-22 04:28:06,344 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2018-06-22 04:28:06,344 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 04:28:06,345 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 04:28:06,346 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 04:28:06,346 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 04:28:06,346 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 04:28:06,346 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:06,346 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 04:28:06,346 INFO ]: Interpolant automaton has 13 states. [2018-06-22 04:28:06,346 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 04:28:06,347 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 04:28:06,347 INFO ]: Found error trace [2018-06-22 04:28:06,347 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:06,347 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:06,347 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-22 04:28:06,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:06,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:06,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:06,348 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:28:06,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:06,507 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:07,243 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-06-22 04:28:07,476 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-06-22 04:28:07,677 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-06-22 04:28:07,743 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:07,743 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:07,743 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 04:28:07,758 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:07,913 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:28:07,913 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:07,927 INFO ]: Computing forward predicates... [2018-06-22 04:28:08,834 WARN ]: Spent 521.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-06-22 04:28:11,127 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2018-06-22 04:28:12,239 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:12,260 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:12,260 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 04:28:12,260 INFO ]: Interpolant automaton has 17 states [2018-06-22 04:28:12,260 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 04:28:12,261 INFO ]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-06-22 04:28:12,261 INFO ]: Start difference. First operand 15 states and 15 transitions. Second operand 17 states. [2018-06-22 04:28:12,785 WARN ]: Spent 299.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2018-06-22 04:28:13,044 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2018-06-22 04:28:13,299 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-06-22 04:28:13,575 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-06-22 04:28:13,576 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:13,576 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:28:13,576 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:28:13,576 INFO ]: Start accepts. Automaton has 17 states. Word has length 14 [2018-06-22 04:28:13,577 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:13,577 INFO ]: With dead ends: 16 [2018-06-22 04:28:13,577 INFO ]: Without dead ends: 16 [2018-06-22 04:28:13,578 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-06-22 04:28:13,578 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:28:13,579 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:28:13,579 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:28:13,580 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:28:13,580 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-06-22 04:28:13,580 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:13,580 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:28:13,580 INFO ]: Interpolant automaton has 17 states. [2018-06-22 04:28:13,580 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:28:13,580 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:28:13,580 INFO ]: Found error trace [2018-06-22 04:28:13,580 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:13,580 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:13,581 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 5 times [2018-06-22 04:28:13,581 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:13,581 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:13,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:13,581 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:28:13,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:13,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:14,639 WARN ]: Spent 420.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2018-06-22 04:28:15,012 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:15,012 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:15,012 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:15,025 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 04:28:15,327 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 04:28:15,327 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:15,340 INFO ]: Computing forward predicates... [2018-06-22 04:28:15,837 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2018-06-22 04:28:16,663 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2018-06-22 04:28:16,999 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-06-22 04:28:17,225 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2018-06-22 04:28:19,271 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:19,292 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:19,292 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-06-22 04:28:19,292 INFO ]: Interpolant automaton has 19 states [2018-06-22 04:28:19,292 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 04:28:19,293 INFO ]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-06-22 04:28:19,293 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 19 states. [2018-06-22 04:28:19,538 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 24 [2018-06-22 04:28:19,876 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2018-06-22 04:28:20,047 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2018-06-22 04:28:20,243 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-06-22 04:28:20,422 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2018-06-22 04:28:20,770 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-06-22 04:28:20,771 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:20,771 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-22 04:28:20,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 04:28:20,771 INFO ]: Start accepts. Automaton has 19 states. Word has length 15 [2018-06-22 04:28:20,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:20,772 INFO ]: With dead ends: 18 [2018-06-22 04:28:20,772 INFO ]: Without dead ends: 18 [2018-06-22 04:28:20,772 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=226, Invalid=476, Unknown=0, NotChecked=0, Total=702 [2018-06-22 04:28:20,772 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 04:28:20,774 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-22 04:28:20,774 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 04:28:20,774 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-06-22 04:28:20,774 INFO ]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-06-22 04:28:20,775 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:20,775 INFO ]: Abstraction has 18 states and 18 transitions. [2018-06-22 04:28:20,775 INFO ]: Interpolant automaton has 19 states. [2018-06-22 04:28:20,775 INFO ]: Start isEmpty. Operand 18 states and 18 transitions. [2018-06-22 04:28:20,775 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 04:28:20,775 INFO ]: Found error trace [2018-06-22 04:28:20,775 INFO ]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:20,775 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:20,775 INFO ]: Analyzing trace with hash -301900562, now seen corresponding path program 6 times [2018-06-22 04:28:20,775 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:20,775 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:20,777 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:20,777 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:28:20,777 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:20,944 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:21,919 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:21,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:21,919 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:21,924 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 04:28:22,156 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 04:28:22,156 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:22,174 INFO ]: Computing forward predicates... [2018-06-22 04:28:23,231 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2018-06-22 04:28:24,976 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2018-06-22 04:28:26,887 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2018-06-22 04:28:27,375 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2018-06-22 04:28:27,908 WARN ]: Spent 379.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2018-06-22 04:28:28,661 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2018-06-22 04:28:28,806 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:28,828 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:28,828 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-06-22 04:28:28,828 INFO ]: Interpolant automaton has 24 states [2018-06-22 04:28:28,829 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 04:28:28,829 INFO ]: CoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2018-06-22 04:28:28,829 INFO ]: Start difference. First operand 18 states and 18 transitions. Second operand 24 states. [2018-06-22 04:28:29,226 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-06-22 04:28:29,227 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:29,228 INFO ]: Finished difference Result 19 states and 19 transitions. [2018-06-22 04:28:29,228 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 04:28:29,228 INFO ]: Start accepts. Automaton has 24 states. Word has length 17 [2018-06-22 04:28:29,228 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:29,228 INFO ]: With dead ends: 19 [2018-06-22 04:28:29,228 INFO ]: Without dead ends: 19 [2018-06-22 04:28:29,229 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2018-06-22 04:28:29,229 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 04:28:29,230 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 04:28:29,230 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 04:28:29,231 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-06-22 04:28:29,231 INFO ]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-06-22 04:28:29,231 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:29,231 INFO ]: Abstraction has 19 states and 19 transitions. [2018-06-22 04:28:29,231 INFO ]: Interpolant automaton has 24 states. [2018-06-22 04:28:29,231 INFO ]: Start isEmpty. Operand 19 states and 19 transitions. [2018-06-22 04:28:29,231 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 04:28:29,231 INFO ]: Found error trace [2018-06-22 04:28:29,231 INFO ]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:29,231 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:29,232 INFO ]: Analyzing trace with hash -768154313, now seen corresponding path program 7 times [2018-06-22 04:28:29,232 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:29,232 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:29,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:29,232 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:28:29,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:29,496 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:30,251 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-06-22 04:28:30,409 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2018-06-22 04:28:30,605 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-06-22 04:28:30,959 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-06-22 04:28:31,106 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2018-06-22 04:28:31,280 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2018-06-22 04:28:31,365 INFO ]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:31,365 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:31,365 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:31,373 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:28:31,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:31,666 INFO ]: Computing forward predicates... [2018-06-22 04:28:32,251 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-06-22 04:28:32,968 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-06-22 04:28:34,010 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2018-06-22 04:28:34,751 WARN ]: Spent 571.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2018-06-22 04:28:35,344 WARN ]: Spent 424.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 44 [2018-06-22 04:28:36,079 WARN ]: Spent 471.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2018-06-22 04:28:37,522 WARN ]: Spent 699.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2018-06-22 04:28:37,883 WARN ]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 34 [2018-06-22 04:28:38,380 INFO ]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:38,401 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:28:38,401 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-06-22 04:28:38,401 INFO ]: Interpolant automaton has 26 states [2018-06-22 04:28:38,401 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 04:28:38,401 INFO ]: CoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2018-06-22 04:28:38,401 INFO ]: Start difference. First operand 19 states and 19 transitions. Second operand 26 states. [2018-06-22 04:28:39,122 WARN ]: Spent 676.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 57 [2018-06-22 04:28:40,287 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2018-06-22 04:28:41,281 WARN ]: Spent 953.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2018-06-22 04:28:41,903 WARN ]: Spent 580.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-06-22 04:28:42,262 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-06-22 04:28:42,414 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2018-06-22 04:28:43,039 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-06-22 04:28:43,041 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:28:43,109 INFO ]: Finished difference Result 21 states and 21 transitions. [2018-06-22 04:28:43,109 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 04:28:43,109 INFO ]: Start accepts. Automaton has 26 states. Word has length 18 [2018-06-22 04:28:43,109 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:28:43,109 INFO ]: With dead ends: 21 [2018-06-22 04:28:43,109 INFO ]: Without dead ends: 21 [2018-06-22 04:28:43,110 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 04:28:43,110 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 04:28:43,112 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 04:28:43,112 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 04:28:43,113 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-06-22 04:28:43,113 INFO ]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-06-22 04:28:43,113 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:28:43,113 INFO ]: Abstraction has 21 states and 21 transitions. [2018-06-22 04:28:43,113 INFO ]: Interpolant automaton has 26 states. [2018-06-22 04:28:43,113 INFO ]: Start isEmpty. Operand 21 states and 21 transitions. [2018-06-22 04:28:43,113 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 04:28:43,114 INFO ]: Found error trace [2018-06-22 04:28:43,114 INFO ]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:28:43,114 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:28:43,114 INFO ]: Analyzing trace with hash 564592663, now seen corresponding path program 8 times [2018-06-22 04:28:43,114 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:28:43,114 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:28:43,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:43,114 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:28:43,115 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:28:43,563 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:44,750 WARN ]: Spent 543.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-06-22 04:28:45,101 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-06-22 04:28:45,462 WARN ]: Spent 344.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-06-22 04:28:45,772 WARN ]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2018-06-22 04:28:45,986 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 45 [2018-06-22 04:28:46,221 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2018-06-22 04:28:46,540 WARN ]: Spent 292.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2018-06-22 04:28:46,667 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2018-06-22 04:28:46,838 INFO ]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:28:46,838 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:28:46,838 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:46,846 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:28:47,269 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:28:47,269 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:28:47,291 INFO ]: Computing forward predicates... [2018-06-22 04:28:47,933 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2018-06-22 04:28:48,274 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-06-22 04:28:48,881 WARN ]: Spent 467.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2018-06-22 04:28:50,880 WARN ]: Spent 744.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2018-06-22 04:28:52,128 WARN ]: Spent 1.04 s on a formula simplification. DAG size of input: 127 DAG size of output: 72 Received shutdown request... [2018-06-22 04:28:52,188 INFO ]: Timeout while computing interpolants [2018-06-22 04:28:52,388 WARN ]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:28:52,388 WARN ]: Verification canceled [2018-06-22 04:28:52,392 WARN ]: Timeout [2018-06-22 04:28:52,392 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:28:52 BoogieIcfgContainer [2018-06-22 04:28:52,392 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:28:52,393 INFO ]: Toolchain (without parser) took 56778.93 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 247.4 MB in the beginning and 528.8 MB in the end (delta: -281.4 MB). Peak memory consumption was 908.7 MB. Max. memory is 3.6 GB. [2018-06-22 04:28:52,393 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:28:52,393 INFO ]: ChcToBoogie took 59.73 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 243.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:28:52,394 INFO ]: Boogie Preprocessor took 95.65 ms. Allocated memory is still 308.8 MB. Free memory was 243.4 MB in the beginning and 241.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:28:52,394 INFO ]: RCFGBuilder took 335.64 ms. Allocated memory is still 308.8 MB. Free memory was 241.4 MB in the beginning and 217.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 3.6 GB. [2018-06-22 04:28:52,394 INFO ]: TraceAbstraction took 56278.81 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 217.2 MB in the beginning and 528.8 MB in the end (delta: -311.6 MB). Peak memory consumption was 878.5 MB. Max. memory is 3.6 GB. [2018-06-22 04:28:52,397 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.73 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 243.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 95.65 ms. Allocated memory is still 308.8 MB. Free memory was 243.4 MB in the beginning and 241.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 335.64 ms. Allocated memory is still 308.8 MB. Free memory was 241.4 MB in the beginning and 217.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56278.81 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 217.2 MB in the beginning and 528.8 MB in the end (delta: -311.6 MB). Peak memory consumption was 878.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 13, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 56.2s OverallTime, 9 OverallIterations, 13 TraceHistogramMax, 8.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 24 SDslu, 239 SDs, 0 SdLazy, 127 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 22.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 78187 SizeOfPredicates, 24 NumberOfNonLiveVariables, 4544 ConjunctsInSsa, 578 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/414 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pc_sfifo_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-28-52-410.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pc_sfifo_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-28-52-410.csv Completed graceful shutdown